Men wh olr brothers are more likely to be gay, acrdg to a study om Universy of Toronto rearchers. The reason may be the maternal immune hypothis.
Contents:
- WE MAY KNOW WHY YOUNGER BROTHERS ARE MORE LIKELY TO BE GAY
- ARE YOUNGER BROTHERS MORE LIKELY TO BE GAY?
- MEN WH OLR BROTHERS ARE MORE LIKELY TO BE GAY, STUDY SUGGTS
- BOYS WH OLR BROTHERS MORE LIKELY TO BE GAY, STUDY SAYS
WE MAY KNOW WHY YOUNGER BROTHERS ARE MORE LIKELY TO BE GAY
An immune rponse some pregnant women’s bodi may expla the “aternal birth orr effect” – that men are more likely to be gay the more olr brothers they have * more sons gay *
The more olr brothers a boy has, the more likely he is to be gay when he grows up – an effect lled the “aternal birth orr effect”. They found that the mothers of gay sons wh olr brothers had the hight levels of antibodi agast this prote, followed by the mothers of gay sons wh no olr brothers.
“Given that the prote is known to be important synapse formatn, you n see how maternal antibodi might affect the wirg of the fetal bra, and that might expla why each subsequent son is more likely to grow up gay. “The signifince of this prelimary observatn, if n be replited, is that intifi specific molecul the bra that may be important for heterosexual as well as homosexual velopment, ” says Dean Hamer, a pneer of rearchg the blogil termants of sexual orientatn. Read more: What do the new gay gen tell about sexual orientatn?
ARE YOUNGER BROTHERS MORE LIKELY TO BE GAY?
In 1996, the psychologists Ray Blanchard and Anthony Bogaert published a paper ntendg that homosexualy was more mon men who had olr brothers.
MEN WH OLR BROTHERS ARE MORE LIKELY TO BE GAY, STUDY SUGGTS
"In [Wtern] societi, homosexual men are femized at var levels and they have more olr brothers than heterosexual men, " state the thors of the study. "To evaluate whether femy and the aternal birth orr effect are universal featur of male homosexual preference or not, we llected origal data om homosexual men, heterosexual men, and heterosexual women om Java (Indonia). The rearchers examed data om 116 homosexual men and 62 heterosexual men om wtern and central Java.
BOYS WH OLR BROTHERS MORE LIKELY TO BE GAY, STUDY SAYS
Consistent wh Blanchard and Bogaert's fdgs Wtern societi, they found that homosexual men were more likely to have olr brothers than heterosexual men.
To be specific, homosexual men their sample had an average of 0. Intertgly, the rearchers also found that homosexual men were more likely to have olr sisters, although this difference was smaller than the olr brother difference. The rearchers then tted whether homosexualy was visible the facial featur of Indonians.